Solo Artist · A voice that went from TikTok clips to a number two album
Holds writing credit on 10 of 10 tracks
Yes, she co-writes all ten tracks on her debut album Visitor, though never alone. Omer Fedi is her main partner, on eight of the ten as a writer and nine as a producer.
Across all 10 tracks: how many Sienna Spiro wrote alone, how many they co-wrote, and how many were written by others. The bracket marks every track they hold any writing credit on.
Share of all 10 tracks where they are personally credited, by role.
Sienna Spiro's writing credit per album, in release order. Hover any bar for the album.
Where Sienna Spiro sits on the scale from a pure performer (0%, sings songs written by others) to a complete author (100%, writes everything). The bright marker is their catalogue authorship score, plotted against other artists on the site.
Reference artists spread across the scale, closest by genre and era.
None of the signature songs above fall in this category.
Sienna Spiro has released one studio album, Visitor (2026), covered here in its standard ten-track form. The 2025 EP Sink Now, Swim Later and the deluxe and territory bonus tracks are outside this studio-album scope.
No albums from this decade.
Sienna Spiro10 tracks
2Blake Slatkin, 2 tracks
EH2Emile Haynie, 2 tracks
LH2Lucy Healey, 2 tracks
NG1Nikki Giovanni, 1 track
AM1Arif Mardin, 1 track
LM1Leon Michels, 1 track
JS1Joe Spiro, 1 track
EL1Eddie Lopes, 1 track
Bubble size = tracks worked on together. OF Omer Fedi · JR Jakob Rabitsch · MW Mary Weitz · Y Yakob · MP Michael Pollack
Data Insight
Spiro co-writes all ten tracks and Omer Fedi is beside her on eight of them, producing nine. That makes the album a two-hander more than a solo record, though she takes a production credit herself on the title track. The credit worth noticing is on the opener, where the poet Nikki Giovanni and the producer Arif Mardin appear alongside her, which points to a sample rather than a session. Two songs are written with just Fedi and nobody else.
Quick Facts
Creative Fingerprint
A co-writer on everything with one steady partner: Omer Fedi writes eight of the ten and produces nine, and she takes her only production credit on the title track.
The Story
Sienna Spiro is an English singer-songwriter and producer, born Sienna Ann Spiro in 2005. She began posting singing videos on TikTok in 2021 and started releasing music in 2024, charting in the UK with 'Maybe'. 'Die on This Hill' followed in October 2025 and reached number 9 in the UK. Her debut album Visitor arrived in July 2026 through Capitol, went to number 2 on the UK Albums Chart and reached the top ten in Australia, Belgium, Ireland, the Netherlands, Norway, New Zealand and the United States. She was nominated for Best New Artist at the 2026 MTV Video Music Awards.